Fig. 1. Geographic location of Mistassini Lake, Quebec in eastern North America, connecting rivers used as breeding grounds by migratory brook charr (Salvelinus fontinalis) in the lake, as well as the locations and family trapline designations of traditional hunting and fishing territories of informants interviewed in the study. Trapline designations follow those used by the local community of Mistissini, Quebec. To respect confidenciality of observations shared by individual informants, we have elected not to associate individual informant numbers (see Tables 3—5) with particular traplines.